CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 48 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which CSS selector matches this element?
   <li class="star" id="intro">Hello</li> (a) .intro (b) #main (c) #star (d) #intro
2. 2.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which element does the selector #main style? (a) <div class="big"> (b) <li id="main"> (c) <li class="main"> (d) <li id="logo">
5. 5.🎯 Which CSS selector matches this element?
   <li class="red" id="hero">Hello</li> (a) li (b) #red (c) div (d) #top
6. 6.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
7. 7.🎯 Can many elements share the same class? (a) No (b) Yes
8. 8.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
9. 9.True or false: #end is a class selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) .top (b) #intro (c) #star (d) .star
11. 11.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <div class="red"> (c) <li id="note"> (d) <li class="big">
12. 12.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
14. 14.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) div (b) .big (c) #logo (d) .main
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) #star (b) h2 (c) #intro (d) #main
16. 16.True or false: .big is an element selector. (a) False (b) True
17. 17.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
18. 18.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="star"> (c) <h1> (d) <h2 class="star">
20. 20.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
21. 21.True or false: p is an element selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) #note (b) #end (c) .logo (d) #logo
23. 23.True or false: img is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector .box style? (a) <p id="box"> (b) <h1 class="menu"> (c) <p class="box"> (d) <p class="star">
25. 25.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .logo (b) #logo (c) h1 (d) #end
26. 26.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="big"> (c) <h1 class="red"> (d) <p class="note">
27. 27.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector #top style? (a) <h2 class="box"> (b) <h1 id="intro"> (c) <h1 id="top"> (d) <h1 class="top">
29. 29.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="note"> (c) <h2 id="main"> (d) <h2 id="intro">
31. 31.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #note (b) #logo (c) .note (d) .big
32. 32.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: #top is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="big"> (c) <h1 class="box"> (d) <p class="red">
35. 35.True or false: #logo is an element selector. (a) True (b) False
36. 36.True or false: #logo is a class selector. (a) True (b) False
37. 37.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
38. 38.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #logo (b) div (c) #star (d) .star
39. 39.True or false: li is an id selector. (a) True (b) False
40. 40.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <span> (c) <h1 id="hero"> (d) <div class="menu">

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